Collaborative writing is an important element of the virtual workplace. While it is sometimes enough to e-mail a document back and forth between authors and editors, users frequently need a more effective solution. Users can choose from system-based or browser-based software and from synchronous and asynchronous editors. These products can vary from the simple to the sophisticated and from free to expensive. This chapter looks at research on the use of collaborative editors and tools currently on the market and provides guidance as how to evaluate the appropriateness of the tools, paying particular attention to collaborative features, industry standards, and security.